Re: "external abort on linefetch (0x814)" on Kirkwood 6282 SoC
On Tue, 2018-05-29 at 13:51 +0200, Andrew Lunn wrote:
> On Tue, May 29, 2018 at 06:50:16AM +0100, Jonathan Medhurst wrote:
> > On Mon, 2018-05-28 at 18:00 +0200, Andrew Lunn wrote:
> > > Hi Rob
> > >
> > > Since my QNAP only has 512M, there is not too much
> > > experimentation i
> > > can do.
> > >
> > > Could you try changing "Memory split" to "3G/1G user/kernel split
> > > (for
> > > full 1G low memory)".
> >
> > Don't you mean change it to 2G/2G? That's what would be needed to
> > let
> > the kernel map the whole 1GB of physical RAM in it's address region
> > and
> > so not need the high memory mechanism.
>
> Hi Jonathan
>
> The comment says:
>
> config VMSPLIT_3G_OPT
> depends on !ARM_LPAE
> bool "3G/1G user/kernel split (for full 1G low
> memory)"
>
> So i'm thinking that means it should support up to 1G of RAM using
> this split. It puts the split at 0xB0000000, so it is more like
> 2.75G/1.25G.
Ah, you are right, I thought you were suggesting VMSPLIT_3G. I didn't
notice that the kernel had sprouted an extra VMSPLIT_3G_OPT option a
couple of years ago.
--
Tixy
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